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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 2. Отображено 2.
03-06-2015 дата публикации

Combined filter for MPPSK (M-ary Phase Position Shift Keying) coherent demodulation and application thereof

Номер: CN104683274A
Автор: QIAN CHENGWEI, WANG JIWU, SHI YAGUANG, WU LE'NAN
Принадлежит:

The invention discloses a combined filter for MPPSK (M-ary Phase Position Shift Keying) coherent demodulation. The combined filter consists of a shock filter and a narrowband band-pass filter, wherein during MPPSK coherent demodulation, the shock filter can convert phase modulation information of MPPSK receiving signals at positions of non-zero code elements into obvious and strong parasitic amplitude modulation shock; the narrowband band-pass filter which is specially structured can fully utilize the characteristic that the MPPSK receiving signals are rich in carrier information to extract local coherent carriers; then two paths of output signals are multiplied and are filtered to extract envelope signals. The combined filter for MPPSK coherent demodulation organically combines the shock filter and the narrowband band-pass filter, the single and separate narrowband band-pass filter and the shock filter are simultaneously packaged inside by adopting a combined packaging manner to form one ...

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Номер записи: 1
30-05-2023 дата публикации

Power fitting positioning method based on binocular image semantic segmentation

Номер: CN116189013A
Автор: CHENG YUNPENG, FENG XINGMING, DING YAJIE, YAN GANG, WANG YONG, ZHANG JITAO, GAO HUI, QIAN CHENGWEI, WU FAN
Принадлежит:

The invention discloses an electric power fitting positioning method based on binocular image semantic segmentation, and the method comprises the steps: obtaining a binocular image through a parallel binocular camera carried by an unmanned plane, and carrying out the processing of a left-eye image and a right-eye image; respectively extracting regional features and edge features of the left-eye image and the right-eye image by using a semantic segmentation module, and fully learning the left-eye image and the right-eye image by using complementarity of the regional features and the edge features to realize high-precision segmentation; for each segmented non-overlapped electric power accessory target, calculating corresponding center point coordinates of each target center point in the left eye image and the right eye image so as to obtain a parallax error; world coordinates of the center points of all the non-overlapping electric power accessory targets are calculated according to the parallax ...

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Номер записи: 2